JPS5933788Y2 - Seal bag for packaging - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the sealing part of a packaging seal bag made of a heat-fusible film.

Traditionally, packaging seal bags have been used that have an opening piece that can be bent to open and close at the opening in order to facilitate opening after product packaging, but problems with this type of seal bag include:
At the time of manufacturing, the opening piece on one side of the film is folded and overlapped with the upper edge of the film on the other side, and both sides of the bag are heat-sealed by fusing or the like, and at the same time, the overlapped opening piece and the other side face each other. Since the film is welded on both sides, it is difficult to open the product after it has been packaged, which poses a problem.

In view of the above-mentioned problems, the present invention has been developed to facilitate opening of the bag by providing a peeling line such as a perforation on the opening piece. The body includes a front film body and a back film body whose sides are heat-sealed in a polymerized state, and an opening piece which is overlapped in the width direction along the outer surface of the upper part of the front film body, and the opening piece or the front film body. In the packaging seal bag, in which the opening piece and the front film body are releasably attached to each other through a freely releasable body provided on the opening piece, and both sides of the opening piece are heat-sealed, the upper end of the back film body and the opening piece are heat-sealed. The upper end of the piece is a protruding part that protrudes upward from the upper edge of the front film body, and both protruding parts form an opening for stuffing products that can be melted and welded. An opening peeling line such as a perforation is provided on the inner side of both sealed sides, and the lower ends of the front film body and the back film body are made continuous by a folded part, and a gusset part is provided in the folded part. At the point.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In FIGS. 1 and 2, 1 is a bag body, and the heat-sealing material is polymerized with each other through a folded part 5 at the lower end. It has a front film body 6 and a back film body 7 made of film, and is formed into a rectangular shape with both sides 8 and 9 welded by melting.

Further, the upper end portion of the back film body 7 is projected upward from the upper edge 10 of the front film body 6, and constitutes a protruding portion 11.

An unsealing piece 12 is superimposed over the entire length in the width direction along the upper outer surface of the front film body 6, and the upper end of the unsealing piece 12 also projects upward from the upper edge 10 of the front film body 6, forming a protrusion 13. are doing.

An adhesive tape 16 (releasable body) made of a heat-fusible film is provided on both sides 14 and 15 of the lower edge of the opening piece 12. The structure is such that the body 6 is detachably fixed to the body 6.

Also, both sides 14 and 15 of the opening piece 12 are the front film body 6.
When fusing and welding both sides 8 and 9 of the back film body 7,
They are simultaneously fused and welded to both sides 8 and 9 of the front film body 6 and back film body 7 to form a sealing portion.

A product stuffing opening 18 is formed between the protrusion 11 of the back film body 7 at the upper end of the bag 1 and the protrusion 13 of the opening piece 12, and can be freely fused and welded.

Further, a gusset part 19 is formed in the folded part 5 at the lower end of the bag body 1.

Near the inner side of the fusing welds on both sides 14.15 of the opening piece 12, up to the full length of both measurement parts of the opening piece 12,
A peeling line 20, such as a perforation or a kerf, is provided parallel to both sides 14,15.

In addition, as the film of the bag 1, as shown in FIG.
The stretched film 2 is laminated with an unstretched film 4 with the printed surface 3 facing inside.

The embodiment of the present invention is constructed as described above, and the product 21 is inserted through the product stuffing opening 18 as shown in FIG. However, the product 21 can be taken out by opening and closing the opening piece 12 of the sealing part.

When opening the seal for the first time, since the opening peel line 20 is provided, if the opening piece 12 is pulled in the opening direction as shown in FIG. The package can be opened reliably and is extremely convenient for taking out the product 21 or storing it again.

Further, since the folded part 5 at the lower end is provided with the gusset part 19, even thick products 21 can be easily and conveniently stored.

Furthermore, when manufacturing the gazette part 9, the folded part 5 can be made into a superposed state and the both sides 8 and 9 can be melted and welded, making it easy to manufacture.

Further, by using a laminated film, the printed surface does not directly touch the stored products 21 or the outside, which is sanitary and prevents damage to the printed surface.

As shown in FIG. 6, it may be a heat-fusible film 17 that is not laminated, and its material may be any heat-fusible material such as polypropylene, polyethylene, vinylon, etc. Not limited.

Also, the example in which adhesive tape 16 is used as a fixing means for freely opening and closing the overlapping portion of opening piece 12 and front film body 6 is shown as a freely releasable body using double-sided adhesive tape or pressure-sensitive adhesive coating. The structure may be such that it is provided on the opening piece 12 side or the front film body 6 side.

In order to make it easier to open the packaging seal bag made of heat-adhesive film after product packaging, the present invention has peel-off lines such as perforations on both sides of the opening piece of the sealing part, so when opening the bag, The opening piece has the advantage of being able to be opened easily and reliably along the peeling line, and also has a gusset section on the folded part at the bottom, making it easy and convenient to store even thick products. It is.

Another advantage is that the gazette part can be easily manufactured.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a sectional view taken along line B-B in Fig. 2, and Fig. 4 is a sectional view taken along line A-A in Fig.
The figure is an explanatory view of the product packaging process according to an embodiment of the present invention, FIG. 5 is a perspective view of the embodiment of the present invention, and FIG. 6 is a sectional view of a film in another embodiment. 1... Bag body, 5... Folded part, 6.
...Front film body, 7...Back film body, 8, 9...Side, 10...Top edge, 11...Protrusion part , 12......opening piece,
13...Protrusion, 14.15...Side, 16...Adhesive tape, 18...Opening, 19...Gusset part , 20...
Opening peel line.

Claims (1)

[Scope of utility model registration request] A bag body 1 made of a heat-fusible film is polymerized in the width direction along the upper outer surface of the front film body 6 with a front film body 6 and a back film body 7 whose both sides 8 and 9 are heat-sealed in a polymerized state. The unsealing piece 12 and the front film body 6 are releasably fixed to each other via the unsealing piece 12 or a freely removable member 16 provided on the front film body 6. In the packaging seal bag whose sides 14 and 15 are heat-sealed, the upper end of the back film body 7 and the upper end of the opening piece 12 are the upper edge 1 of the front film body 6.
A protruding portion 11.13 protrudes upward from 0, and both protruding portions 11.13 form an opening 1 for stuffing goods that can be freely melted and welded.
8, on both sides of the opening piece 12, an opening peeling line 20 such as a perforation is provided inside the heat-sealed sides 14 and 15, and the front film body 6 and the back film body are separated. 7. A seal bag for packaging, characterized in that the lower end of the bag is made continuous by a folded part 5, and a gusset part 19 is provided on the folded part 5.